General Boscogn serves as the supreme commander of the Chuder Empire’s military forces and leads its most elite unit, the Purple Rhino Knights. Recognized throughout the empire as its most powerful and formidable soldier, he is a veteran warrior whose reputation precedes him on the battlefield. His appearance is as imposing as his status, as he is never seen without his elaborate silver armor, which is adorned with sharp spikes at the shoulders and elbows. He typically wears a distinctive rhino-shaped helm, and his preferred weapon is a bardiche, a type of poleaxe that he wields with devastating precision while mounted.

In terms of personality, Boscogn embodies the ideals of a professional and honorable soldier. He demonstrates a strict adherence to the chain of command, prioritizing the fulfillment of orders from his superiors above his own tactical judgment. This loyalty proves to be a critical weakness, as he follows commands even when he knows they are strategically unsound. He holds a deep disdain for cowardice, showing particular contempt for officers like Adon Coborlwitz who allow their subordinates to die for personal glory or safety. In contrast to such figures, Boscogn displays great personal bravery and valor, never hesitating to place himself in the heart of combat. He is observant and perceptive, as shown when he quickly identifies the Band of the Falcon's swordsman, Guts, as the infamous "Hundred Man Slayer" through their exchange of strikes.

Motivated by duty and a sense of military honor, Boscogn's primary objective is the successful execution of his orders. During the battle for the fortress of Doldrey, his role is to command the Chuder forces defending the stronghold. He demonstrates sharp tactical acumen, quickly growing suspicious of Griffith’s unconventional strategy when the Band of the Falcon divides its already outnumbered forces. He correctly deduces tactical weaknesses in the enemy's position and advocates for a sound defensive approach. However, despite his authority on the field, he is overruled by Lord Gennon, the governor of Doldrey, who holds a higher rank. Gennon’s obsession with capturing Griffith alive forces Boscogn to abandon his own sound tactics and commit his troops to a reckless pursuit, a decision he knows is disastrous.

The most significant relationship in Boscogn's story arc is with his superior, Lord Gennon. While Boscogn is a consummate professional trying to win a battle, Gennon’s personal lust for Griffith corrupts the chain of command, leading to a tragic conflict between military necessity and feudal obedience. On the opposing side, his key relationship is with Guts, whom he views as a worthy and dangerous adversary. Boscogn’s recognition of Guts's skill elevates their duel beyond a simple clash of soldiers to a contest between two exceptional warriors. In terms of development, Boscogn is a largely static character whose strength and integrity are established from the start. The tragedy of his role lies not in a personal flaw being punished, but in his unwavering commitment to a flawed system, as his obedience to an incompetent superior leads directly to his downfall.

Notable abilities make Boscogn a legendary figure on the battlefield. His physical strength is immense, capable of cutting through multiple enemy soldiers with a single, sweeping blow of his bardiche. His skill is such that Guts, a warrior who single-handedly killed one hundred men, confesses that fighting Boscogn feels "worse than fighting a hundred men." He is not merely a brute-force fighter; his tactical insight marks him as an excellent commander who can read the flow of battle and anticipate enemy movements. In the specific adaptation of the Golden Age Arc II film, his final duel with Guts concludes differently than in other versions; Guts's sword does not break, and the apostle Zodd does not intervene. Instead, Guts defeats Boscogn by using a broken banner from the Band of the Falcon as a distraction with his off-hand, creating an opening to decapitate the Chuder general.